Pipe-core machine.



No. 722,670. PATENTED MAR. 17, 19,03

- P. BRITZ.

PIPE GORE MACHINE.

- APPLICATION nun AUG. 15:19o2

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F. 133F112. PIPE GORE MACHINE. APPLI OA TION F ILED AUG. 15, 1902.

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UNHED STATES FRANK BRITZ, OF (VEST SUPERIOR, WISCONSIN.

PIPE-CORE MACHINE SPECIFICATION forming part of Letters Patent No. 722,670, dated March 17,1903.

Application filed August 15,1902. Serial No. 119,776. (No model.)

To all whom it may concern:

Be it known that I, FRANK BRITZ, a citizen of the United States, residing at West Superior, in the county of Douglas, State of Wisconsin, have invented certain new and useful Improvements in Pipe-Gore Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a machine for forming cylindrical cores, and is particularly adapted for the construction of such cores in pipe-casting where coatings of different materials are applied to the core-barrel.

The invention has for an object to provide a construction embodying receptacles adapted to retain the coating materials located upon opposite sides of a support for the corebarrel, which support may be shifted to bring the core into contact with the strike carried by either of the receptacles.

A further object of the invention is to provide an improved construction of strike adapted to be raised and lowered upon its mounting to control the supply of coating material from the receptacle.

Another object is toprovide a construction of driving means for rotating the core-barrel and also for shiftingthe same laterally between the opposite receptacles.

Other and further objects and advantages of the invention will be hereinafter set forth, and the novel features thereof defined by the appended claims.

In the drawings, Figure 1 is a plan of the invention. Fig. 2 is an elevation showing the right end in Fig. 1. Fig. 3 is a similar view showing the left end in Fig. 1. Fig.4 is a central vertical section through Fig. l on the line 4 4:, and Fig. 5 is a detail vertical section of one bearing for the core-barrel.

Like letters of reference refer to like parts in the several figures of the drawings.

The machine is provided with opposite end frames A and A, upon which the principal parts are supported, although longitudinal supports may be provided at any point desired. At opposite sides of these frames receptacles B and B are provided adapted to receive the core materials, and, if found desirable, they may be of different sizes, as shown in Fig. 1, where the larger receptacle upon the exterior of the receptacle.

B is adapted to receive the loam for coating the core, while the smaller receptacle B may contain the blaking placed upon the core after the formation thereof. The bottom of the receptacles forms a main strike and is provided with a feed-plunger B connected by means of a stem B with a pivoted lever B Each of the receptacles is also provided at its inner edge and at opposite ends with ways 0 to receive a movable curved strike or plate 0, preferably of skeleton structure, with a smooth curvedface-plate extended at each end beyond the body thereof, as shown in Figs." 1' and 4, and slidably mounted at its opposite extended ends in tracks or ways 0 of similar curvature to the face-plate, so as to provide at its lower portion when raised an outlet for material within the receptacles and when lowered forms a closing gate therefor. These strikes may be raised and lowered in any desired manner-for instance, by means of the rock-shafts 0 extending longitudinally of the machine and provided at one end with a lever-arm C for .operation,while the opposite en ds of thestrikes are connected tothese shafts by crank-arms O and pitmen 0 having jointed connectionsOZ-so as to operate the strikes thereby.

It will be seen that ifthe strike be raised to open the receptacle, as shown at the rightof Fig. at, an oscillation of the shaft (3 will draw the strike downward to out off the supply of material from the receptacle. Between the receptacles sliding bearing-supports D are mounted upon the end frames A and A, so as to travel thereon, and oneis provided with suitable journal boxes or'bearings D, adapted to receive the shaft E of the core-barrel E, as shown at the left of Fig. 1, and each bearing or support D may have a suitable track connection to enter the'groove or ways D formed in the upper surface of the end plates. At the opposite or right end of the machine, as shown in Fig. 1, a bearing-frame D is provided, which rests upon the support D of the frame A and is provided with a bearing-yoke D to receive the shaft E of the core-barrel, while beyond this yoke a bearing D is formed and adapted to ride upon an extension A from the frame A. This bearing D is spaced from the yoke D by the sides D of the frame and adapted to receive a driving-wheel D mounted in the bearing 1) and having a clutch connection D to the shaft E For the purpose of driving the wheel D a driving-chain F may be provided and connected with any suitable source of power. For instance, one of the bearingwheels F at the sides of the frame may be driven from a suitable power-shaft, so that an endless chain may be used, which permits the shifting of the bearings and the core-barrel to bring the core into contact with the strikes upon either of the receptacles without disconnecting or changing the driving connections, as shown in Fig. 2, it being simply necessary to reverse the direction of retation under such conditions.

For the purpose of reciprocating the corebarrel from one receptacle to the other I have provided each of the bearings D with a series of rack-teeth G, depending downward therefrom and meshing with a gear G, carried upon a stub-shaft G extending longitudinally outward from the end frames of the machine, which gearing is suitably driven by pinions G meshing therewith and carried by the opposite ends of the power-shaft G thus providing means for shifting the core-barrel between the opposite strikes by power and also for continuously rotating the barrel at an even speed in order to secure the most advantageous coating thereof.

From the foregoing description it is believed that the operation of the several parts will be understood, and it will be seen that when the core-barrel E is shifted to bring the core into contact with the strike mounted on the receptacle B, the material issuing therefrom will be rubbed into the barrel by the pressure of the plunger and the contact with the face of the strike in'the continuous rotation thereof, so as to secure a most thorough and efficient coating of the barrel without the necessity of any band operation therefor, while the feed of material forward upon the inclined bottom of the receptacle may be facilitated by means of the plunger 13*. When the desired amount of material has been placed upon the core-barrel, the same may be shifted to the opposite receptacle to receivea continuous coating by means of the gearing just described, which keeps the shaft of the barrel constantly in driving relation with its rotating means. The core and its barrel are then removed from the open bearings and a fresh barrel may be inserted in position for a subsequent operation.

It will be obvious that changes may be made in the details of construction and configuration without departing from the spirit of the invention as defined by the appended claims.

Having described my invention and set forth its merits, what I claim, and desire to secure by Letters Patent, is-

1. In a pipe-core machine, a bearing for a core-barrel, strikes upon opposite sides thereof, feeding receptacles adjacent to said strikes, and means for shifting said parts toward and from each other; substantially as specified.

2. In a pipe-core machine, a bearing for a core-barrel, strikes upon opposite sides thereof, feeding receptacles adjacent to said strikes, means for shifting said parts toward and from each other, means for mounting said strikes to form the outlets from said receptacles, and means for rotating said barrel in relation to said strikes; substantially as specified.

3. In a pipe-core machine, a bearing for a core-barrel, strikes upon opposite sides thereof, feeding receptacles adjacent to said strikes, means for shifting said parts toward and from each other, means for mounting said strikes to form the outlets from said receptacles, means for rotating said barrel in relation to said strikes, a rock-shaft, a crankarm thereon, and a connection extending therefrom to operate said strikes; substantially as specified.

4. In a pipe-core machine, a material-receptacle, a support for a core-barrel adjacent to the delivery end of said receptacle, and a strike having a curved operating-face disposed concentric to said barrel; substantially as specified.

5. In a pipe-core machine, a material-receptacle, a support for a core-barrel adjacent to the delivery end of said receptacle, a strike having a curved face adjacent to said barrel, and means for mounting said strike upon said receptacle to form the outlet-gate therefor; substantially as specified.

6. In a pipe-core machine, a frame, receptacles at opposite sides thereof, bearings mounted at the opposite ends of said frame, a core-barrel removably supported in said bearings, means for rotating said barrel, and means for oscillating said bearings between the receptacles; substantially as specified.

7. In a pipe-core machine, a frame, receptacles at opposite sides thereof, bearings mounted at the opposite ends of said frame, a core-barrel removably supported in said bearings, means for rotating said barrel, means for oscillating said bearings between the receptacles comprising a depending rack carried by the bearings, and a gear meshing therewith to reciprocate the bearings upon their support; substantially as specified.

8. In a pipe-core machine, a frame, receptacles at opposite sides thereof, bearings mounted at the opposite ends of said frame, a core-barrel removably supported in said bearings, means for oscillating said bearings between the receptacles comprising a depending rack carried by the bearings, a gear meshing therewith to reciprocate the bearings upon their support, a driving-wheel having a clutch connection with the shaft of said barrel and mounted upon one of said movable bearings, and an endless chain for rotating said wheel in either direction; substantially as specified.

9. In a pipe-core machine, a frame, receptacles at opposite sides thereof, bearings mounted at the opposite ends of said frame, a core-barrel removably supported in said bearings, means for oscillating said bearings between the receptacles comprising a depending rack carried by the bearings, a gear meshing therewith to reciprocate the bearings upon their support, a driving-wheel having a clutch connection with the shaft of said barrel and mounted upon one of. said movable bearings, an endless chain for rotating said wheel in either direction, a strike forming the outletgate for each of said receptacles and provided with a curved face, and means carried by said frame for operating said strikes; substantially as specified.

10. In a pipe-core machine, a frame, receptacles at opposite sides thereof, bearings mounted at the opposite ends of said frame, a core-barrel removabl y supported in said bearings, means for oscillating said bearings between the receptacles comprising a depending rack carried by the bearings, a gear meshing therewith to reciprocate the bearings upon their support, a driving-wheel having a clutch connection with the shaft of said barrel and mounted upon one of said movable bearings, an endless chain for rotating said wheel in either direction, a strike forming the outletgate for each of said receptacles and provided with a curved face, means carried by said frame for operating said strikes, a plunger in each of said receptacles, an operatinglever therefor, and an extended lever from the strike-operating means; substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK BRITZ. Witnesses:

H. J. SCHOMMER, O. A. ERHART. 

